The closest alternative to GPT-5.2 is GLM 5 Turbo — comparable intelligence (46.8 vs 46.6); for a cheaper option, Qwen3.7 Max runs $1.25/M vs $1.75/M; for more speed, GLM 4.7 hits 427 t/s; and the best open-weight substitute is MiniMax M3.
GLM 5 Turbo is the closest alternative to GPT-5.2, with an Intelligence Index of 46.8 (GPT-5.2 scores 46.6) at $1.20 per million input tokens.
Yes — Qwen3.7 Max costs $1.25 per million input tokens versus $1.75 for GPT-5.2, while staying within ~8 points of its Intelligence Index.
MiniMax M3 is the strongest open-weight alternative to GPT-5.2 — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.